CN101371757B - An oven for cooking food - Google Patents
An oven for cooking food Download PDFInfo
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- CN101371757B CN101371757B CN200810166104.4A CN200810166104A CN101371757B CN 101371757 B CN101371757 B CN 101371757B CN 200810166104 A CN200810166104 A CN 200810166104A CN 101371757 B CN101371757 B CN 101371757B
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- Prior art keywords
- housing
- baking box
- baking
- fan
- exhaust outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B3/00—Parts or accessories of ovens
- A21B3/04—Air-treatment devices for ovens, e.g. regulating humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
- F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
An oven for cooking food comprises: an enclosure (2) for receiving the food to be heated and for containing a cooking atmosphere, the enclosure (2) comprising two horizontal walls forming respectively a bottom wall (9) and a top wall (10), interconnected by at least two vertical side walls (8); the enclosure (2) being closed by at least one vertical door (5) and communicating with the outside via an exhaust opening (28) for the positive pressure gas inside the enclosure (2) and a heater device (11) for heating the cooking atmosphere which is characterized in that the exhaust opening (28) for the positive pressure gas in the enclosure (2) is under the heater device (11).
Description
The application is to be dividing an application of December 23, application number in 2003 are 200710001535.0, denomination of invention is " a kind of baking box for cooking food " application for a patent for invention the applying date.
Technical field
The present invention relates to the baking box for cooking food.
The invention particularly relates to a kind of baking box, it comprises: for holding food to be heated and holding the housing of curing environment, described housing comprises two horizontal wall, they form respectively diapire and roof, two horizontal wall at least interconnect by two vertical sidewalls, and described housing is closed by least one vertical door; With the heater for heated baking environment.
An object of the present invention is to improve this baking box.
According to one embodiment of the invention, for the baking box of cooking food, comprise: for holding food to be heated and holding the housing of curing environment, described housing comprises two horizontal wall, they form respectively diapire and roof, two horizontal wall at least interconnect by two vertical sidewalls, described housing is closed by least one vertical door, and by exhaust outlet and exterior, described exhaust outlet is for discharging enclosure interior pressure higher than atmospheric gas; With the heater for heated baking environment; Described baking box is characterised in that: it comprises: regulate chamber, it is filled with the liquid of a constant volume at least in part, and this liquid capacity can change between high value and low value, regulates chamber to communicate with housing by air intake; With enter pipe, it extends between high-end and low side, the high-end outside opening towards regulating chamber and housing, when liquid level is substantially corresponding with its high value, low side is sealed by liquid.
Background technology
Known existing baking box, for example, when producing that steam or door are closed or heater is gas range (producing burning gases or the extra high pressure that ignites), the pressure in toaster case can rise, and the rising of this pressure is changeable and can maintain long or short period.From various security reasons, consider, need to control this pressure rise, it is declined, even eliminate this pressure rise.In existing baking box, normally by being provided with, opening Song of mechanical detachable cap solves for this.
Such detachable cap needs periodic maintenance because particularly when it is blocked, exist no longer can normal operating danger.Thereby no longer valid and realize reliably its safety effect.
The embodiments of the invention that limit above can overcome this deficiency.
Really, it can control the pressure rise in housing in the following manner, and these modes are: non-mechanical means, thus can overcome the restriction that the maintenance essential to existing baking box is relevant; Adjustable way, because this mode can stop gas to flow out from housing, or makes the either large or small degree of described gas and enters by changing liquid level; With-reliable fashion, because do not exist liquid to be sealed undesirably or by this danger of mechanical blockage, even in the situation that enter the bottom of pipe and immerse under high water level and occur, pressure significantly rises, then gas also can force back water, and " bubbling " also discharges by entering pipe.
Can be at random with below one or more, configure to realize, they be: described baking box comprises the discharge side that is filled with at least partly certain quantity of fluid, and liquid capacity can change between high value and low value, and described discharge side communicates with adjusting chamber; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, high-end on high and low liquid level towards discharge side opening; Described baking box is included in the smoke exhaust pipe extending between first end and the second end, the exterior of described first end and discharge side, and described the second end is positioned on high liquid level, and described the second end allows barotropic gas to discharge from housing by discharge pipe; Described baking box comprises an adjuster, and adjuster self comprises adjusting chamber and discharge side, and this two chamber has formed ，Gai Liang chamber, at least local separated space and interconnected by a slype, to allow liquid to flow between two chambeies; Described baking box comprises the first temperature sensor at discharge side, regulating chamber to comprise the second temperature sensor, the first temperature sensor is for measuring from exhaust outlet effluent air temperature, and the second temperature sensor is for measuring the gas temperature that enters housing by air intake;-described baking box comprises the first temperature sensor and the second temperature sensor at discharge side, and the first temperature sensor is for measuring from exhaust outlet effluent air temperature, and the second temperature sensor is positioned under low liquid level in discharge side; Described baking box comprises calculation element, and for calculating the relative humidity of baking box, this relative humidity is the function of the first and second temperature sensor measured temperatures; Described baking box comprises a fan, and described fan is arranged on enclosure interior to stir the baking air being heated by heater, and described fan forms an intake region in enclosure interior, and air intake is located substantially in fan aspirated region; Described baking box comprises can be sent to water vapour the steam generation device in housing; For the exhaust outlet that the barotropic gas of enclosure interior is discharged, be positioned under heater; Exhaust outlet is substantially at the minimum point place of diapire opening; Communicate with a bend pipe with exhaust outlet, described bend pipe can be discharged liquid and condensate from housing, and prevents that cold air from entering housing.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: housing, be used for holding food to be heated and hold curing environment, described housing comprises two horizontal wall that form respectively diapire and roof, they interconnect by least two vertical sidewalls, described housing is at least closed by a vertical door, described housing is by exhaust outlet and exterior, and described exhaust outlet is for discharging the barotropic gas of housing.
Described baking box also comprises the first temperature sensor, to measure from the temperature of exhaust outlet effluent air.
Known existing baking box may comprise the device for generation of steam, is used for to delivering vapor in housing.The shortcoming of existing baking box is: can not control reliably the humidity in housing.Particularly, existing baking box does not have to consider the humidity by food self generation conventionally.
The embodiment of the present invention limiting above can overcome described deficiency.
Really, due to these configuration, the temperature of surveying by the first temperature sensor and pre-recorded under curve map, can calculate the humidity ratio in housing.Then the humidity ratio calculating according to this mode regulates baking.
Can adopt arbitrarily below one or more to configure to realize, they are :-described baking box comprises the device that calculates the humidity ratio in baking box, and humidity ratio is the function of the first temperature sensor measured temperature; Described baking box comprises the second temperature sensor of witness mark temperature; Humidity ratio in baking box calculates by calculation element, and humidity ratio is the function of the first and second temperature sensor measured temperatures; Described baking box comprises the heater for heated baking environment; Described baking box comprises the fan that is positioned at enclosure interior, to stir the curing environment being heated by heater, described fan forms an area of low pressure in housing, and-described baking box is included in the air intake of housing upper shed, and it is roughly positioned at the described area of low pressure of fan; Due to this set, can make air enter in housing to be dried the environment in housing, especially dry environment wherein when bake process finishes; For example, roasting food can be obtained more crisp; Due to this set, if be essential in bake cycle, also can make air enter in housing with cooling curing environment more promptly; When cold air flows into air intake, this set just can stir the cold air entering in housing rapidly by fan; There is cold air from the top of housing or bottom enters and cooling top or bottom tray are advantages of baking box respectively; Due to this embodiment of the present invention, can make the more uniform temperature in housing;-described baking box comprises an adjusting chamber, and it is at least filled with liquid in part, and adjustable liquid capacity changes between high value and low value, and this adjusting chamber communicates with air intake; Described baking box is included in the pipe that enters extending between high-end and low side, the high-end outside opening towards regulating chamber and housing, and when liquid level is roughly corresponding with its high value, low side is covered by liquid;-described baking box comprises a discharge side, and it is filled with liquid at least partly, and liquid capacity can change between high value and low value, and this discharge side communicates with regulating chamber; Described baking box comprises a damper box, and damper box self comprises and regulate chamber and discharge side, this two chamber to form the space that the passage separately and by finite size is interconnected mutually of Local Phase at least, and described channels designs becomes can allow liquid to circulate between this two chamber; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, described high-end on two position towards discharge side opening: described baking box is included in the smoke exhaust pipe extending between first end and the second end, described first end and discharge side exterior, described the second end is positioned on high liquid level, and described the second end allows the overvoltage gas in housing to discharge by discharge pipe; The second temperature sensor is positioned under low liquid level in damper box; The first temperature sensor is positioned on high liquid level in discharge side; Described baking box comprises the device for generation of steam, and it is configured to supply the steam in housing.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: hold food to be heated and hold the housing of curing environment, described housing comprises two horizontal wall that form respectively diapire and roof, they are connected by least two vertical sidewalls, described housing is closed by least one vertical door and by exhaust outlet and exterior, this exhaust outlet is for discharging the barotropic gas of housing, and-for the heater of heated baking environment.
In addition, in this baking box, for the exhaust outlet of the barotropic gas of housing, be positioned under heater.
Known existing baking box may comprise controlling the exhaust outlet that in housing, barotropic gas is discharged.When heater is gas range, these gases for example in housing, are baked food and/or steam generation device and/or combusted gas generant moisture forms.
The embodiment of the present invention limiting above can be improved the uniformity of heat distribution in this baking box.
Really, by this configuration, can limit, even remove the flue effect of the smoke exhaust pipe communicating with exhaust outlet, and do not using valve, ventilating opening or any mechanical device that other can get clogged, or even also do not use in the situation of bend pipe, allow in housing or even the gas of little malleation is freely discharged from housing.The temperature difference between the top and bottom of baking box reduces, and the heat distribution in housing is more even.
Can at random adopt below one or more to configure to realize, they are: exhaust outlet is roughly at the minimum point place of diapire opening; Exhaust outlet communicates with bend pipe, and bend pipe is configured to discharge liquid and condensate and avoid cold air to pour in housing from housing; Described baking box comprises the device for generation of steam, and it is designed to provide steam in housing; Described baking box comprises a fan, it is positioned at enclosure interior in order to stir the baking gas being heated by heater, described fan forms an area of low pressure in housing: described baking box is included in an air intake on housing, it is roughly arranged in the area of low pressure of described fan: described baking box comprises that regulates a chamber, it is at least filled with liquid in part, adjustable liquid capacity changes between high value and low value, and this adjusting chamber communicates with air intake; Described baking box is included in of extending between high-end and low side and enters pipe, is high-endly regulating chamber and hull outside opening, and when liquid level is roughly corresponding with its high value, low side is covered by liquid; Described baking box comprises a discharge side, and it is at least filled with liquid in part, and adjustable liquid capacity changes between high value and low value, and this discharge side communicates with regulating chamber; Described baking box comprises described adjusting chamber and discharge side, and this two chamber has formed at least local be separated from each other and by allowing the liquid space that mobile slype is interconnected between this two chamber; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, this discharge pipe on high liquid level towards discharge side opening; Described baking box is included in the smoke exhaust pipe extending between first end and the second end, first end and discharge side exterior, and the second end is positioned on high liquid level, and described the second end allows the barotropic gas in housing to discharge by discharge pipe; Described baking box comprises the first temperature sensor and the second temperature sensor, the temperature of the gas that the first temperature sensor measurement is discharged from exhaust outlet, and the second temperature sensor is positioned under low liquid level in discharge side; Described baking box comprises the first temperature sensor and the second temperature sensor, the temperature of the gas that the first temperature sensor measurement is discharged from exhaust outlet, and the second temperature sensor measurement enters the gas temperature of housing by air intake; Described baking box comprises the calculation element that calculates the humidity ratio in baking box, and humidity ratio is the function of the first and second temperature sensor measured temperatures.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises for the curing environment moist and holding and the housing of heat food.
Described baking box also comprises: water column pipe, the water that contains predetermined volume, its volume keeps constant between peak level and low side outlet, and water is exported and is flowed in water column pipe by low side, with-scatterer, it is designed to can receive the water flowing out from low side outlet and at least evaporate the part these water.
Known existing baking box may comprise the device for generation of steam, and water pours on the heating element heater in this device.Conventionally wish to produce quantitative steam.The quantity of steam producing is determined by the flow velocity that arrives the water of heating element heater substantially.But, always unstable for realizing the flow regulator of this effect, thereby need to regulate.
The embodiment limiting above can overcome above-mentioned deficiency.
Really, due to these configurations, the water flow velocity in the low side exit of water column pipe substantially in water column pipe the water height between the outlet of peak level and low side determine, peak level is corresponding to for example overfall.This water height just can easily keep constant without any need for special adjusting.In addition, the pressure in housing, for example, cause because quantity of steam is greater than its condensation number that while rising, water velocity declines automatically, and without any need for electrical feedback control device.This embodiment of the present invention provide a kind of simple and reliable, for generation of the quantitative method of steam.
Can at random adopt below one or more to configure to realize, they are: peak level exports corresponding to overflow; Water column pipe is positioned at hull outside, and scatterer is arranged in housing; For example particularly in the situation that water is evaporated by resistance heater, scatterer is electronic heating apparatus; The heat that scatterer is produced by gas range heats; Scatterer is around the rotating shaft rotation of fan, and fan is designed to stir in enclosure interior the steam being produced by scatterer, and described fan forms an area of low pressure in housing; Described scatterer is the disk rotating around rotating shaft; Described baking box is included in an air intake on housing, and it is roughly positioned at the area of low pressure of fan; Described baking box comprises that regulates a chamber, and it communicates with the air intake of housing, regulates at least local water flowing out from the overfall of water column pipe that is filled with in chamber, and the water capacity in adjustable adjusting chamber changes between high value and low value; Described baking box is included in the pipe that enters extending between high-end and low side, high-end at adjusting chamber and hull outside opening, and when water level is roughly worth at once with its height, low side is awash; Described baking box comprises a discharge side, its at least local water of discharging from the overfall of water column pipe that is filled with, and the water capacity in adjustable discharge side changes between high value and low value, and described discharge side communicates with regulating chamber; Described baking box be included in housing and high-end between the discharge pipe that extends, discharge pipe communicates with housing, high-end on high water level towards discharge side opening; Described baking box is included in the smoke exhaust pipe extending between first end and the second end, first end and discharge side exterior, and the second end enters on high water level, and described the second end allows the overvoltage gas in housing to discharge by discharge pipe; Described baking box comprises a damper box, and damper box self comprises described adjusting chamber and discharge side, and this two chamber has formed at least local space that is separated from each other and is interconnected by slype, and slype is designed to allow liquid to circulate between this two chamber; Described baking box comprises a cooling circuit between the peak level of water column pipe and low side outlet, it extends to the At The Height of at least a portion at top, so that the described at least a portion at Local cooling top at least, and make at least a portion steam in the humid air of shell on food, form condensate; And-difference in height between the outlet of peak level and low side is corresponding to the hydraulic pressure in low side exit, and described hydraulic pressure is between 5 to 30mbar.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: for the curing environment moist, hold the housing with heat food, described housing comprises the roof being arranged on food to be heated, be arranged on the heater of enclosure interior, and fan, it is arranged on enclosure interior equally, and described fan comprises at least one rotating vane, and rotating vane rotates to stir around rotating shaft the baking air being heated by heater on circular orbit.
Described baking box also comprises: be arranged in housing around the scattering disk of rotating shaft and the rotation of fan one, and water-feed, it by water near hull outside imports scattering disk so that water drops on scattering disk, due to the heat that heater produces, water is at least partly evaporated.
Known existing baking box disposes the evaporimeter as steam generator, and this evaporimeter is usually located at hull outside.Steam enters in housing by a hole.Fan scatters steam in housing.
Existing this baking box is quite expensive.
The embodiment limiting above can overcome above-mentioned deficiency.
Really, this configuration is simple and does not require additional evaporimeter.
Can at random adopt below one or more to configure to realize.They are: scattering disk is arranged in the central space of circular orbit; Heater and scattering disk positioned opposite also heat scattering disk, so that fall at least part of water evaporation on scattering disk; Heater is gas range; Water-feed comprises the water column pipe that contains predetermined water gaging, and the capacity of water keeps constant between peak level and low side outlet, and water is exported and flow on scattering disk by low side; Rotate with a certain rotary speed with scattering disk, regulate this speed so that the water dropping on scattering disk is injected into top at least partly.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: for holding the housing of food to be heated, described housing comprises two horizontal wall, form respectively diapire and roof and at least by two vertical sidewalls, interconnect, described housing is closed by least one vertical door, with-being arranged on the fan of enclosure interior, described fan comprises at least one rotating vane, rotating vane rotates around rotating shaft on circular orbit.
This baking box also comprises: cleaning agent feed system, it makes some cleaning agents fall on fan and by fan, be ejected on each wall of housing near cleaning agent can being imported to fan from hull outside.
Existing baking box may comprise cleaning agent feed system, and this system is arranged on in housing vertical wall or horizontal wall.Common this feed system layout is on roof.But existing this method can not be ejected into cleaning agent on all wall surfaces of housing.
The embodiment limiting above can overcome this deficiency.
Really, due to this configuration of the present invention, fan is cleaning agent atomization, and the cleaning agent being atomized guides by air-flow everywhere in housing, thereby cleaning agent can be ejected on all wall surfaces of housing.
Can at random adopt below one or more to configure to realize, they are: described baking box comprises the scatterer rotating around rotating shaft together with fan, cleaning agent is imported to the cleaning agent feed system of scatterer, this feed system imports cleaning agent scatterer in such a manner makes its when rotation spray cleaning agent along the direction of each wall of housing; Scatterer is disk, and the axle of its circular symmetric overlaps with the rotating shaft of fan; Cleaning agent feed system imports cleaning agent in scatterer, scatterer consists of the cylinder with cylindrical wall, its symmetrical cylinder axis overlaps with the rotating shaft of fan, described wall is installed with many apertures, described hole is designed to allow cleaning agent radially to flow to cylindrical outer, flows to each wall of housing; Cleaning agent feed system comprises the container that is designed to hold cleaning agent, and the liquid diluting that some cleaning agents can be supplied above container is used for the liquid of dilute cleaning agent in the downstream flow of container in cleaning agent feed system.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises :-for the curing environment moist, hold the also housing of cooking food, described housing comprises the roof that is arranged on food to be heated top, and in enclosure interior, produces the means of steam.
Described baking box further comprises the means of cooling roof.
Known existing baking box may comprise the vapourizing furnace for generation of steam, and described vapourizing furnace is placed on hull outside conventionally.Steam enters in housing by hole.Described baking box is by steam suction casing.But, often can find: even at cooking food, as flavoring or cheese in the situation that, when baking finishes, there will be unfavorable dry surface or epidermis.
The embodiment limiting above can overcome above-mentioned deficiency.
Really, due to this configuration, the steam being produced by steam generation device condensation on roof, small drops of water can drop on the dessert or cream being positioned under roof.
This configuration is enough to moistening foodstuff surface to overcome above-mentioned deficiency.
Can at random adopt below one or more to configure to realize, they are: the cooling device being formed by pipe-loop, and liquid circulates in this pipe-loop, described pipe-loop and roof thermo-contact;-liquid is water, and liquid is exported and flow in scatterer by low side in the downstream of pipe-loop, and described scatterer produces steam in housing; The water column pipe that is positioned at the upstream of pipe-loop and contains predetermined volume water, water capacity keeps constant between low side outlet and peak level; The water column pipe that is positioned at pipe-loop downstream, it holds the water of predetermined volume, and water capacity keeps constant between low side outlet and peak level.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: for hold the also housing of heat food at curing environment, described housing comprises two horizontal wall, they form respectively diapire and are connected with roof and by least two vertical walls, and described housing is closed by least one door; Fan, it is arranged in enclosure interior, and on a wall of housing, described fan comprises the blade that at least one rotates around rotating shaft on circular orbit, to stir baking air; And air intake, it is substantially towards fan rear openings on the wall of housing, and fan is arranged on this wall.
In addition, in this baking box, each blade is connected on rotating shaft with suitable method, so that the gas entering from air intake just directly pierced into the circular orbit inside of each blade before entering housing remaining space.
The disclosed existing baking box of European patent document EP-A-733862 for example, has known that it can comprise housing, be arranged in the fan of enclosure interior and substantially at the air intake of fan rear openings.But in these existing baking boxs, the Temperature Distribution in housing is not optimum.
The embodiment limiting above can overcome above-mentioned deficiency.Really, due to this configuration, the air of hull outside enters housing directly to be stirred rapidly by fan from fan rear side.Thereby can make the Temperature Distribution in housing more even.
Can at random adopt one or more establishings that limit to put Song Shixian below, they are: by disk, be connected to the blade on rotating shaft, described disk comprises that at least one is positioned at the hole on circular orbit, the radius of described circular orbit is substantially equal to rotating shaft and the separately spacing of air intake on housing wall, and fan is arranged on described wall; The opening that corresponds respectively to air intake and each hole be substantially annular and there is equal diameter; The diameter in described hole is substantially equal to 30mm; Described blade consists of the flat thin slice of rectangle, it is being substantially perpendicular to disk and is extending through in the plane of rotating shaft, each thin slice is connected on disk by the first edge, by second edge relative with the first edge, be connected on annulus being centered close on rotating shaft and extending being parallel in the plane of disk of annulus; Comprise six holes that distribute around angular separation such as rotating shafts with disk.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: for holding the housing of food to be heated, described housing has two horizontal wall, one of them horizontal wall forms diapire, another horizontal wall forms roof, and they connect by least two vertical sidewalls, and described housing is closed by least one vertical door, and comprise the window that can see enclosure interior, and produce a kind of device that shows the audible signal that heating process finishes.
This baking box further comprises lighting device, and it is designed to can produce the light that represents that heating process finishes in enclosure interior when described heating process completes.
For example, the existing baking box as public organizations' food supply baking box is known.In public food supply kitchen, often there will be several baking boxs to work simultaneously.This existing baking box is designed to show completing of the baking that presets by sound conventionally.Described sound is a kind of audible signal, when heating process finishes, when the scheduled time finishes or when reaching predetermined temperature or humidity ratio etc., can send described audible signal.But, when several existing this baking boxs are worked simultaneously in kitchen, may be difficult to judge sound sends from which baking box.
The embodiment limiting above can overcome above-mentioned deficiency.Really, due to these configurations, audible signal can remind user's heating process to be through with.Therefore, user needn't observe whole bake process.User also can carry out other work.Yet, when user wishes that the bake process being alerted finishes, audible signal causes user's attention, represents that the highlighting lamp of the baking box that bake process has just finished is to user's visual signal, can see that this light is to help user easily to observe baking box by the window in oven door.
Can at random adopt below one or more to configure to realize, they are: described characteristic light is colored light; When described heating process finishes, the intensity of light changes back and forth; Described lighting device is arranged on door; Described door has an insulating space at least local and housing edge heat, and lighting device is arranged in described insulating space; Described insulating space comprises two glazing panels, i.e. wainscot and outer panels, and outer panels has towards the transparent region of wainscot transparent region, and to form described window, this two panels is arranged in lighting device surround is within it installed; The variation back and forth of light intensity has formed flash of light; Described baking box comprises slideway, and for arranging in height overlapping pallet at baking box, lighting device emits beam along short transverse; Towards housing, form smooth wall with-wainscot.
According to another embodiment of the present invention, a kind of baking box for cooking food comprises: for holding and heat food, the housing that comprises curing environment, described baking box comprises: the fan that stirs baking air, for motor clockwise and counter clockwise direction driven fan, described motor has a main coil, and makes the first switching device shifter of motor reverse rotation.
People recognize this baking box from US4671250 and EPA1107650 especially.
Especially, document EPA1107650 discloses an example of this baking box, and in this baking box, it is reverse that motor uses dc source, the first switching device shifter can make to flow into the electric current of motor.Reverse by making to flow to the electric current of motor, the direction of rotation of turbine is also reversed.
For the baking box for cooking food scatters heat in the best way, a kind of known method often using is the direction of rotation oppositely (approximately per minute or every 4 minutes once) that makes fan.When direction is reverse, heating process must interrupt preventing that heat from gathering at case top place.Make direction of rotation oppositely will delay bake process, the direction of rotation that changes as quickly as possible fan is made us expectation.
But, in such baking box, being oppositely subject to fan inertia and being arranged on the obstruction of the low moment of the motor in these baking boxs of direction of rotation.Owing to there is no brakes, will make whole unit, comprise motor and fan, cost stops for a long time and again starts in the opposite direction.Although be equipped with the motor of electromagnetic brake, have supply in market, they are that wearing and tearing expensive and brake block require high level maintenance.
Summary of the invention
There is a kind of baking box can overcome above-mentioned deficiency, it not only has above-mentioned various feature, also there is following characteristics: main coil is by the power supply that has the AC power of predetermined period, during being also included at least a portion at least one half period in two half periods of each ac period of deboost phase with it, in the deboost phase, second switching device shifter that can make main coil and AC power disconnect.
The invention provides a kind of baking box for cooking food, comprise: hold food to be heated and hold the housing of curing environment, described housing comprises two horizontal wall that form respectively diapire and roof, they are connected by least two vertical sidewalls, described housing is closed by least one vertical door and by exhaust outlet and exterior, this exhaust outlet is for the barotropic gas of housing, heater with for heated baking environment, is characterized in that: the exhaust outlet for the barotropic gas of housing is positioned under heater.
Due to these measures, what main coil was used is rectified current, and it will reduce the rotating speed of motor.And motor can stop quickly before it reverses.
Can at random adopt below one or more to configure to realize, they are: can be in the deboost phase, at the positive half period of alternating current or the second switching device shifter of negative half-cycle internal cutting off main coil AC power; Can be in the deboost phase, during the negative half-cycle of alternating current and part positive half period or cut off the second change-over switch of main coil AC power during the positive half period of alternating current and part negative half-cycle; This sample loading mode, the required power of motor braking can reduce; Can be in the driving stage, at the positive half period of alternating current with at least partly during negative half-cycle or at the negative half-cycle of alternating current with connect at least partly the second switching device shifter of main coil AC power during negative half-cycle; Thereby the speed of motor can reduce during oppositely restarting; Motor has inferior coil, and before the deboost phase, the first switching device shifter can make the sense of current in main coil and time coil reverse; Thereby can obtain higher retardation efficiency, thereby shorten braking time; During-quiescent time after deboost phase immediately, second switching device shifter that can cut off main coil AC power; Described measure can prevent that motor from again starting after interrupting in the direction of rotation with identical before the deboost phase.
According on the other hand, the present invention relates to a kind of technique of controlling roasting food in baking box, wherein: the baking air in baking box is stirred by fan, fan is by there being the motor of main coil to drive, under the help of the first switching device shifter, make the direction of rotation of motor oppositely with J hectare of hour hands and counterclockwise driven fan, main coil is by the AC-powered having between predetermined period,, in the deboost phase, in the portion of time at least one half period in two half periods in each cycle of alternating current, disconnect with AC power with main coil.
Can at random adopt below one or more to configure to realize, they are: in the deboost phase, during the positive half period or negative half-cycle of alternating current, main coil and AC power disconnect; In the deboost phase, during positive half period and part negative half-cycle during the negative half-cycle of alternating current and part positive half period or at alternating current, main coil and AC power disconnect; In the driving stage, at the positive half period of alternating current with at least partly during negative half-cycle or at the negative half-cycle of alternating current with at least partly during positive half period, main coil is connected in AC power; Motor has inferior coil, and before the deboost phase, the sense of current in main coil and time coil is reverse; During quiescent phase after deboost phase immediately, main coil and AC power disconnect.
On having read the basis of the description of each embodiment, other side of the present invention, object and advantage are clearly.
Accompanying drawing explanation
Also can more thoroughly understand the present invention with reference to the accompanying drawings, accompanying drawing is as follows:
Fig. 1 is the perspective schematic view of baking box the first embodiment of the present invention;
Fig. 2 is the schematic diagram of the baking box in Fig. 1, has shown that especially toaster case is perpendicular to housing rear wall, substantially the sectional view on place, centre position and rear wall and the crossing vertical plane of heater;
Fig. 3 is the perspective view of the fan of baking box shown in Fig. 1 and 2;
Fig. 4 is the sectional view of fan shown in Fig. 3;
Fig. 5 is cooling line perspective view, and cooling line is for the baking box roof shown in cooling Fig. 1 and 2;
Fig. 6 is the schematic diagram that is similar to Fig. 2, a kind of variant form of baking box adjuster shown in presentation graphs 2;
Fig. 7 is the schematic diagram that is similar to Fig. 5, with perspective view form, represents a kind of variant form for the cooling circuit of baking box roof shown in cooling Fig. 2 and 5:
Fig. 8 is the schematic diagram that is similar to Fig. 2, represents the second embodiment of baking box of the present invention;
Fig. 9 is the schematic diagram that is similar to Fig. 2 and 8, represents the 3rd embodiment of baking box of the present invention;
Figure 10 is similar to Fig. 2,8 and 9 schematic diagram, represents the 4th embodiment of baking box of the present invention:
Figure 11 is the schematic diagram that is similar to Fig. 2, is the part of variant form for the baking box of aforementioned each figure, has shown for holding the container of cleaning agent;
Figure 12 shows the schematic diagram of the detergent container Figure 11 from front side;
Figure 13 is according to the perspective schematic view of a kind of variant form of baking box of the present invention;
Figure 14 is the show in schematic partial sections of the oven door shown in Figure 13;
Figure 15 represents the alternative embodiment of baking box shown in Figure 13 and 14 to be similar to the view form of Figure 14;
Figure 16 schematically shows perpendicular to diapire the cross section of part and the crossing vertical plane of diapire therebetween substantially, and this is a baking box embodiment according to the invention;
Figure 17 schematically shows an embodiment of the power circuit of motor, and described motor drives the baking box fan shown in Figure 16;
Figure 18 schematically shows the current cycle of the primary circuit that flows to motor, and described motor drives the baking box fan shown in Figure 16;
Figure 19 represents the work period of the first and second switching device shifters, and described switching device shifter is suitable for controlling the power delivery of motor, and described motor drives the baking box fan shown in Figure 16.
In each accompanying drawing, same or similar element represents with identical Reference numeral.
The specific embodiment
Four embodiment of baking box of the present invention are described below with reference to Fig. 1 to 10.
In the first embodiment shown in Fig. 1, baking box 1 of the present invention comprises the housing 2 (or muffle burner hearth) being contained in shell 3.Shell 3 has the device 4 for the temperature of adjustment housings 2, and has and allow food to be heated and/or to be baked to fill in the door 5 in housing 2.
As shown in Figure 2, housing 2 also comprises heater 11, fan 12, protective grille 13 and slideway 14.
Burning gases are the mixture of air and coal gas preferably.Described mixture mixes by agitator 18.By bellows 19, air is fed.Thereby air/gas mixture arrives in gas range under a little higher than atmospheric pressure.The conveying of electronic installation (not shown) control combustion gas.If gas range 11 quits work, for example, when arriving reference temperature, bellows 19 keep little malleation to enter in mixture 18 to prevent any steam.
As shown in Figure 3, at the place, periphery of disk 20, fan 12 has a plurality of blades 22 of arranging around rotating shaft 21 equal angles.As example, these blades 22 consist of rectangular flat, and each rectangular flat extends in the plane that is substantially perpendicular to disk 20 and comprises rotating shaft 21.This symmetry around rotating shaft 21 make blade can be in the same manner clockwise or be rotated counterclockwise.
On the one hand, each blade 22 is connected on disk 20 by the first edge 70, on the other hand, by the second edge 72, is connected on wheel week 71.Wheel week 71 is annular, and its external diameter is substantially equal to the diameter of disk 20, and it is centered close on rotating shaft 21.Wheel week 71 extends in the plane that is parallel to disk 20.
As shown in Figure 4, disk 20 has bore hole 73.These holes 73 roughly form the circular hole of arranging around rotating shaft 21 equal angles.According to the first embodiment of fan 12, the diameter of fan 12 is 350mm; It comprises that 12 blades and 6 diameters are roughly the hole of 30mm, and these holes are arranged on the annulus that diameter is 220mm.Described diameter is roughly corresponding to the distance between rotating shaft 21 center on rear wall 7 and gas access 44.Blade 22 for example, is of a size of 30mm in mouth 72 directions when being parallel to edge 7, on perpendicular to edge 70 and 72 directions, is of a size of 80mm.Hole 73 is roughly positioned on the bisector of the angular area that two continuous blades 22 limit.For example, gas access diameter is 40mm, and the diameter in hole 73 is roughly 30mm.
According to another example, fan 12 is from the different of above-mentioned example: the diameter of disk 20 is 270mm.
When they rotate, blade 22 rotates and limits central space 23 along the circular path centered by rotating shaft 21.
Protective grille 13 extends on a vertical plane towards disk 20, from baking space 25, here looks over, and protective grille 13 is before gas range 11 and fan 12, and baking space 25 is for holding food to be heated and between described gas range 11 and door 5.Protective grille 13 is selectable.
10 pairs of slideways 14 essentially horizontally extend on sidewall 8.Each sidewall 8 has in a pair of slideway 14.These slideways 14 are for support tray 26, and heating and/or baking barbi are placed on this pallet 26.Preferably, the bottom of pallet 26 has perforation 27.
The condensate of housing 2 inside flows along inclined-plane towards exhaust outlet 28, and flows to from here the outside of housing 2.For this purpose, exhaust outlet 28 communicates with bend pipe 29.When bend pipe 29 is when being full, when its normal operating condition, the liquid of bend pipe 29 bottoms prevents that cold air rising from entering exhaust outlet 28, thereby prevent that cold air from entering in housing 2, thereby by avoiding cold air to enter to contribute to make the temperature stabilization of enclosure interior and evenly via exhaust outlet 28SI.
Condensate can be from the food being just baked in housing 2 and/or steam generation device 30, and steam generation device 30 is suitable for water vapour to be transported in housing 2.
In a variant form (not shown) of the present invention, exhaust outlet 28 can pass a sidewall 8 and/or pass rear wall 7 openings of housing 2.Under these circumstances, can remove condensate by other method.In another version, the junction of exhaust outlet 28 between diapire 9 and sidewall 8 or rear wall 7.
In the described embodiment of the present invention, baking box 1 has adjuster 31 herein.Described adjuster 31 comprises discharge side 32 and regulates chamber 33.Discharge side 32 and adjusting chamber 33 are interconnected by slype 51.
Regulate chamber 31 to be positioned at housing 3 inside, after rear wall 7, regulate chamber 31 to be communicated with rear wall 7 by air intake 44.
Water level in adjuster 31 is controlled by emptying valve 36 also can.Described emptying valve 36 can be controlled the flow velocity of water in excretory duct 37, and described excretory duct 37 is connected to the bottom of adjuster 31 on bend pipe 29.
Water capacity in adjuster 31 can change the water capacity in discharge side 32 between high value and low value, and described high value is corresponding to the height of the first overflow pipe 35, and described low value is corresponding to the height of the junction between excretory duct 37 and adjuster 31.
In the present embodiment, regulate chamber 33 adjacent with discharge side 32.Regulate chamber 33 and discharge side 32 to be separated by separator 43.Separator 43 is not separated discharge side 32 and is regulated chamber 33 with complete sealing means.The effect of separator 43 is restrictions, rather than prevents the gas realized by slype 51 between two housings 32 and 33 and the exchange of water completely.
Regulate chamber 33 to communicate with housing 2 by air intake 44, in the intake region that air intake 44 forms in the rotation by fan 12 substantially towards housing 2 openings.Regulate chamber 33 also by making air enter to regulate to enter pipe 45 and exterior in chamber 33, make water level under inlet tube 45.
But if no matter the pressure rise in housing 2, even if exhaust outlet 28 or discharge pipe 38 get clogged, regulates water level in the chamber 33 any position between its high water level and its low water level, burning gases can also be discharged by entering pipe 45.If enter pipe 45, immerse under the water level regulating in chamber, combustion gas physical efficiency " bubbling " discharge.Regulate the effect in chamber 33 thereby be not only controlled humidity but also can be used for controlling the pressure in housing 2, regulate chamber 33 by the mechanical system of any opening and closing pipeline, not realize above-mentioned control, wherein, it makes cold dry air enter controlled humidity by entering pipe 45 by changing water level.Regulate chamber 31 thereby realized and be similar to mechanical system, for example, the function of detachable cap, but regulate chamber 31 to have advantages of not get clogged and inaccessible, thus make baking box of the present invention safer.
The first temperature sensor 46 is placed in discharge side 32 to measure the temperature of the gas that enters and transmit by discharge pipe 38 from exhaust outlet 28.The second temperature sensor 47 is placed on and regulates in chamber 33 to measure the temperature that enters the gas in housing 2 by air intake 44.In the situation that bend pipe 29 prevents that the cold air of housing 2 outsides from entering, the first temperature sensor 46 is measured the temperature that can represent housing 2 temperature.The temperature that the second temperature sensor 47 is measured can represent by entering pipe 45 air themperatures that enter.
The first and second temperature sensors 46 and 47 are connected to for measuring the calculation element 482 of the relative humidity of housing 2 inside:.Calculation element 48 in a conventional manner, for example, by the temperature difference between the first temperature sensor 46 and the second temperature sensor 47 and calculate the relative humidity of housing 2 inside according to existing scale.
In the present embodiment, baking box of the present invention is also useful on steam (steam) is transported to the steam generation device 30 in housing 2.In the present embodiment, these steam generation devices 30 comprise water column pipe 49 and scatterer 50.
Water receiver 52 is positioned at housing 2 outsides.Water receiver 52 has the high-end outlet 54 as overfall, and high-end outlet 54 is corresponding to the high water level of water column pipe 2.Pipeline 53 allows water to flow into scatterer 50 from water receiver 52.Water flows out from pipeline 53, exports 55 enter in scatterer 50 by low side.
Near water water column pipe 49 flows to disk 50 is fallen disk 50.Then the disk 50 being heated by gas range makes a part for described water evaporate.Another part water is sprayed by disk 50 and evaporates in the flame of gas range 11.Neither be injected on wall 7,8,9 and 10 because contact disk 50 evaporates another part water that neither evaporate in the flame of gas range 11, be especially injected on roof 10.The water being ejected on roof 10 is fallen in top pallet, then by boring a hole, 27 towards diapire 9, from a pallet 26, flows to another pallet 26, and reclaims by exhaust outlet 28 at diapire 9 place's water.This has prevented from being placed on the food in pallet 26 and has formed and be dried and/or burned epidermis.
The ratio that is ejected into the water on roof 10 can be controlled by changing the rotary speed of scattering disk 50.
Pressure reduction in water column pipe 49 between peak level and low side outlet 55 is in the scope between 5 millibars (mbar) and 30 millibars.As long as the water level in water column pipe 49 keeps constant, pressure reduction keeps constant equally, unless the pressure rise of housing 2 inside.As long as the pressure of housing 2 inside keeps equaling the pressure of housing 2 outsides substantially, i.e. atmospheric pressure, water exports 55 flow velocity by low side and also substantially keeps constant so.But if the inner steam that produces of housing 2, the pressure of housing 2 inside will rise so, higher than the pressure of housing 2 outsides.Then the pressure reduction between peak level and low side outlet 55 will decline, thereby water exports 55 flow velocitys that flow out by low side, also declines.Thereby the water column pipe 49 inner speed that produces steam of adjustment housings 2 automatically.High-end outlet 54 communicates with water-feed 34.By the mobile water of high-end outlet 54, enter adjuster 31
As shown in Figure 5, pipeline 53 has a part that forms cooling circuit 56 between water receiver 52 and low side outlet 55.Described cooling circuit 56 forms gentle Yan coil pipe, and it extends and contact roof 10 housing 2 is outside on a part for roof 10.As example, described coil pipe closely pastes and joins with the groove being formed on during punching press in the sheet metal that forms roof 10.
Thereby roof 10 is cooled, this contributes to the condensation of at least a portion steam contained in housing 2 internal gas.On roof 10, the water of condensation can drip in top pallet.Because the bottom of pallet 26 has perforation 27, then water towards diapire 9 from a pallet to another pallet drippage, gather in outlet 28 at diapire 9 place's water.This can be used for preventing forming and being dried and/or burned surface on the food in pallet 26.
In the variant form shown in Fig. 6, the first temperature sensor 46 is placed in discharge side 32 in the foregoing manner, but the second temperature sensor 47 is also placed in discharge side, is arranged in the water under low water level.Like this, the first temperature sensor 46 is measured the temperature that represents housing 2 internal temperatures as above-mentioned explanation, and what the second temperature sensor 47 was measured is substantially to stablize, and can be used to determine the reference temperature of relative humidity in housing 2.
In another variant form shown in Fig. 7, cooling circuit 56 is arranged on the upstream of water receiver 52.
Fig. 8 has shown the second embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the baking box described in the first embodiment.Its main difference is: heater 11 consists of resistance heater, rather than consists of gas range.Described resistance heater 11 is located substantially on the position identical with the gas range of previous embodiment description.Resistance heater 11 at least part is arranged in central space 23.The function that resistance heater and gas range are realized is basic identical.Especially its heats scattering disk 50.
In a variant form, the water in water column pipe 49 flows directly to (in this case, baking box 1 of the present invention not necessarily needs scattering disk 50) on resistance heater.Then the steam producing is sucked away and is dispersed in housing by fan 12.
Fig. 9 has shown the 3rd embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the baking box described in the second embodiment.Its main difference is: scattering disk 50 replaces by spraying cylinder 57, and heater 11 consists of resistance heater, and it is set to around the ring of fan 12 or hat.
Similarly, when baking box 1 is not used to cooking food, water column pipe 49 can be sent to cleaning agent near fan with Song.Thereby, spray cylinder 57 and realized substantially the function identical with scattering disk 50 described in previous embodiment.
Figure 10 has shown the 4th embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the baking box described in the second embodiment.Its main difference is: as the 3rd embodiment, heater 11 is set to the ring around fan 12, additional heater 61 substantially towards scattering disk 50 with heating disk 50.These additional heaters 61 for example consist of resistance heater.
In the situation that not exceeding the scope of the invention, baking box of the present invention can have many versions.
Thereby in unshowned a kind of variant form, housing 2 has front surface and rear surface, each surface can be opened or closed by door.In this case, fan 12 is for example arranged at least one sidewall 8, and heater 11 is towards each fan 12.
In the version of the present invention shown in Figure 11 and 12, baking box according to the present invention comprises the container 65 for cleaning agent.More precisely, container 65 inserts in the feed system of cleaning agent 49, is positioned on gas range 11, fan 12 and protective grille 13.Water is transported in container 65 by water column pipe 49.Cleaning agent dilutes in water, and then the cleaning agent flowing out from container 65 flows to low side outlet 550 from container at least in part
Cleaning agent can be liquid, can be also solid.If cleaning agent is solid, cleaning agent, for example, is fritter or the bead that compressing powder forms so.
As shown in figure 12, for example, container 65 at one end has the opening of parallelepiped shape on face.Described container 65 comprises chamber 66, and bead 67 can insert in this chamber 66.Chamber 66 is suitable for making water to flow at bead 67 around, and the cleaning agent that makes to be diluted in water is assembled so that cleaning agent is discharged towards low side outlet 55.
Certainly, container 65 can be combined with any in further feature structure of the present invention, also can use separately.
In other variant form, a plurality of fans 12 and a plurality of gas range 11 are arranged on identical wall.
In another variant form shown in Figure 13 to 15, according to baking box of the present invention and embodiment above and the main difference of variant form, be: the baking box in this embodiment comprises for sending the device of heating process end signal.
As shown in figure 13, baking box 1 comprises the housing 2 being contained in shell 3.Described shell 3 has adjusting device 74.Adjusting device 74 comprises for the temperature of adjustment housings 2 and the device of humidity with for generation of a kind of device that shows the audible signal that heating process finishes.Adjusting device 74 is also controlled lighting device 80, and door 5 is for putting into described housing 2 by food to be heated and/or to be baked.
As shown in figure 14, door 5 is double-walled doors.Door comprises two panels 75,76 that glass is housed, i.e. wainscot 75 and outer panels 76.
According to other embodiments of the invention, which floor a lamp can throw light on.For example, in thering is the baking box 1 of ten pallets 26, proved that three lamps that distribute are enough on whole height.
When predetermined heat process finishes, control device 74 causes lighting device 80,81 flashes of light.
In another variant form shown in Figure 16 to 19, baking box according to the present invention is mainly from the different of previous embodiment and variant form: the baking box of the present embodiment comprises for braking and/or drive and/or change the device of the direction of rotation of fan 12.
According to the version shown in Figure 16, baking box 1 according to the present invention comprises housing 2 (or muffle burner hearth), and it is closed by door 5, and door 5 is for packing food to be heated and/or to be baked into housing 2.
Sidewall is suitable for supporting 20 pallets 26, and food to be heated and/or to be baked is contained on this pallet 26.
In its rear wall 7, baking box 1 has two, and annular ring is around the heater 11 of trunnion axis X and X respectively, and described diaxon is perpendicular to sidewall 7.In the present embodiment, heater 11 is resistors.
Two fans 12 are installed so that they are respectively around axle X and X ' rotation.Each fan 12 consists of the supercentral disk 20 that is positioned at one of axle X and X '.At the outer of disk 20, place, each fan 12 comprises a plurality of blades 22 around axle X or X ' isogonism pitch arrangement.These blades 22 for example consist of flat rectangular strip or thin slice, and described rectangular strip and thin slice extend in the plane that is substantially perpendicular to disk 20 process axle X and X '.This symmetry about axle X or X ' make blade 22 can be in the same manner clockwise and be rotated counterclockwise.
On the one hand, each blade 22 is connected with disk 20 by the first edge 70, on the other hand, by the second edge 72, is connected with hat 71.Hat 71 is annular, and its external diameter is substantially equal to the external diameter of disk 20.Complete 71 be centered close on corresponding axis X or X '.Hat 71 extends in the plane that is parallel to disk 20.
The diameter of disk 20 is less than the diameter of the annulus extending substantially thereon.
Each fan 12 is by axle 87 by motor M or M ' driving, and axle 87 is with axle X or X ' extension.
Each motor M or M ' are for example single-phase four-stage motors, and power is 250 watts.
As shown in figure 17, each motor M or M ' comprise main coil 78 and time coil 89.
By power circuit 91 from power supply 90 to motor M with M ' conveying alternating current.
Each motor M or M ' are controlled by the first switching device shifter K1, the second switching device shifter K2 and the 3rd switching device shifter K3.The first switching device shifter K1 for example consists of electromechanics or relay.They can make the sense of current in main coil 88 reverse with respect to the sense of current of inferior coil 89.
The second switching device shifter K2 for example consists of the electronics relaying power relay of putting into motor M and M ' power supply circuits 91.This relay is so-called non-same period of type.
The 3rd switching device shifter K3 for example consists of relay.The effect of described relay is equivalent to motor M and M, the interface of power circuit 91 and electronic-controlled installation (not shown).The first switching device shifter K1 of each motor M of described Control or M '.
The second switching device shifter K2 and the 3rd switching device shifter K3 are for example arranged on relay plug-in unit 94.
The second switching device shifter K2 is started by electronic-controlled installation at point of zero voltage (be the some Z in Figure 18, the figure shows positive half period P and the negative half-cycle of the sine-wave current that is input to motor M and M ' power circuit 91).Point of zero voltage Z is detected by electronic-controlled installation.
Electronic-controlled installation starts the second switching device shifter K2 by point of zero voltage Z point place, only positive half period P with even only in the part-time (shadow region in Figure 18) at positive half period P, motor M is connected with power supply with M ', to reduce the required electric energy of braking motor M and M '.Like this, the electric current that (referring to the F in Figure 19) flows to motor M and M ' during braking is rectified current.Due to this respect of the present invention, thereby can not use rectifier bridge.
On the contrary, for the driving stage E at motor M and M ' is to motor M and M ' transmission of electric energy, the second switching device shifter K2 still can be started by electronic-controlled installation when by point of zero voltage Z, during all positive half period P and at least part of negative half-cycle N, motor M and M ' are connected on power supply 90, to reduce the speed of motor M and M '.
In order to obtain better retardation efficiency, before carrying rectified current by means of the second switching device shifter K2, can first change the direction of rotation of motor M and M '.This is oppositely by the first switching device shifter K1, the sense of current in main coil 88 oppositely to be realized with respect to the inferior coil 89 of motor M and M '.
In order to prevent that motor M and M ' from not changing direction of rotation and restart after braking, the stop phase R before the driving stage E that the second switching device shifter K2 finishes to restart with the speed of expecting with motor M and M ' at deboost phase F, for example, answer past during 2 seconds.
Figure 19 represents a work period of the first switching device shifter K1 and the second switching device shifter K2.
The first switching device shifter K1 has two states, is expressed as state 0 and state 1 on the upper curve of Figure 19.State 0 is corresponding to clockwise direction, and state 1 is corresponding to counterclockwise.
In the lower curve of Figure 19, state 0 represents that the second switching device shifter K2 makes motor M and M ' and power supply 90 disconnections, and during state 1 is illustrated in each cycle T of the alternating current that flows to motor M and M ', the second switching device shifter K2 is connected to motor M and M ' on power supply 90.Intermediateness between state 0 and state 1 is corresponding to deboost phase F.As indicated in above, only on power supply 90, reach this state motor M and M ' being connected to by the second switching device shifter K2 during the part of positive half period P.Any value between this state desirable 0 and 1, to be reduced in the power of deboost phase F supply motor M and M '.
The situation of reciprocity ground consideration positive half period or negative half-cycle is proved to be equivalence.Thereby although what describe as example is that the second switching device shifter K2 makes motor M and M ' disconnect with power supply 90 during part P positive period, equally also can be described as the second switching device shifter and removes and during part negative half-cycle N, make motor and power supply 90 disconnections, etc.
Certainly, in the situation that not exceeding scope of the present invention, any feature of one of version or embodiment all can combine with one or more other features.
Claims (24)
1. the baking box for cooking food, comprise :-for holding the housing (2) of food to be heated, described housing (2) has two horizontal wall, one of them horizontal wall forms diapire (9), another horizontal wall forms roof (10), they connect by least two vertical sidewalls, described housing (2) is closed by least one vertical door (5), and comprise the window that can see that housing (2) is inner, with-produce a kind of device (74) that shows the audible signal that heating process finishes, it is characterized in that: baking box also comprises lighting device (80, 81), it is arranged in insulating space (78), insulating space (78) is arranged between the wainscot (75) and outer panels (76) of door (5), wherein wainscot (75) at least part be transparent, and outer panels (76) comprises transparent region (83), lighting device (80, 81) being designed to can be at the inner light that represents that heating process finishes that produces of housing (2) when described heating process completes.
2. baking box according to claim 1, is characterized in that: described only colored light.
3. according to the baking box one of claim 1 and 2 Suo Shu, it is characterized in that: when described heating process finishes, the intensity of light changes back and forth.
4. according to the baking box one of claim 1 Suo Shu, it is characterized in that: described lighting device (80,81) is mounted on door (5).
5. baking box according to claim 4, is characterized in that: described door (5) has insulating space (78), its at least local and housing (2) insulate heat, and lighting device is arranged in described insulating space.
6. baking box according to claim 5, it is characterized in that: described insulating space (78) comprises two glazing panels, be wainscot (75) and outer panels (76), outer panels has towards the transparent region of wainscot transparent region, to form described window, this two panels in, lighting device is arranged in framework (77) wherein.
7. according to the baking box described in any one in claim 1, it is characterized in that: the variation back and forth of light intensity has formed flash of light.
8. according to the baking box described in claim 1 any one, comprise slideway (14), for placing in height overlapping many pallets (26) at baking box, lighting device is along highly emitting beam.
9. according to the baking box described in any one in claim 6, wherein wainscot (75) forms smooth wall towards housing (2).
10. baking box according to claim 1, comprise the heater (11) for heated baking environment, described housing (2) is by exhaust outlet (28) and exterior, this exhaust outlet (28) is for the barotropic gas of housing (2), should be positioned under heater (11) for exhaust outlet (28) of the barotropic gas of housing (2).
11. baking boxs according to claim 10, wherein, exhaust outlet (28) is roughly at the height opening of the minimum point of diapire (9).
12. according to the baking box described in any one in claim 10 and 11, wherein, exhaust outlet (28) communicates with bend pipe (29), and bend pipe is provided in when avoiding cold air to pour in housing (2) can discharge liquid and condensate from housing (2).
13. according to the baking box described in any one in claim 10, comprises the device (30) for generation of steam, and it is designed to provide steam in housing (2).
14. according to the baking box described in any one in claim 10, comprise fan (12), it is inner to stir the baking gas by heater (11) heating that it is positioned at housing (2), and described fan (12) forms an area of low pressure in housing (2).
15. baking boxs according to claim 14, are included in the air intake (44) on housing (2), and it is roughly arranged in the area of low pressure of described fan (12).
16. baking boxs according to claim 15, comprise and regulate chamber (33), it is at least filled with liquid in part, and adjustable liquid capacity changes between high value and low value, and this adjusting chamber (33) communicates with air intake (44).
17. baking boxs according to claim 16, be included between high-end (39) and low side, extend enter pipe (45), high-end (39) are regulating chamber (33) and housing (2) outside opening, and when liquid level is roughly corresponding with its high value, low side is covered by liquid.
18. according to the baking box described in any one in claim 16 and 17, comprises discharge side (32), and it is at least filled with liquid in part, and adjustable liquid capacity changes between high value and low value, and this discharge side (32) communicates with regulating chamber (33).
19. baking boxs according to claim 18, comprise damper box (31), described damper box (31) comprises adjusting chamber (33) and discharge side (32), this two chamber has formed at least part and has been separated from each other and passes through the space that slype (51) is interconnected, and this slype can allow liquid to flow between this two chamber.
20. according to the baking box described in any one in claim 18, is included between exhaust outlet (28) and high-end (39) discharge pipe (38) extending, this discharge pipe (38) on high liquid level towards discharge side (32) opening.
21. baking boxs according to claim 20, be included in the smoke exhaust pipe (40) extending between first end (41) and the second end (42), first end (41) and discharge side (32) exterior, the second end (42) is positioned on high liquid level, and described the second end (42) allows the barotropic gas in housing (2) to discharge by discharge pipe (38).
22. according to the baking box described in any one in claim 18, comprise the first temperature sensor (46) and the second temperature sensor (47), the first temperature sensor (46) is measured the temperature of the gas of discharging from exhaust outlet (28), and the second temperature sensor (47) is positioned under low liquid level in discharge side (32).
23. according to the baking box described in any one in claim 15, comprise the first temperature sensor (46) and the second temperature sensor (47), the first temperature sensor (46) is measured the temperature of the gas of discharging from exhaust outlet (28), and the second temperature sensor (47) is measured the temperature that enters the gas of housing (2) by air intake (44).
24. according to the baking box described in any one in claim 22, comprises the calculation element (48) that calculates the humidity ratio in baking box, and humidity ratio is the function of the first and second temperature sensors (47) measured temperature.
Applications Claiming Priority (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR02/16586 | 2002-12-23 | ||
| FR02/16590 | 2002-12-23 | ||
| FR0216585A FR2849169B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR02/16580 | 2002-12-23 | ||
| FR0216583A FR2849170B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR0216584A FR2849167B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR0216588A FR2849166B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR02/16589 | 2002-12-23 | ||
| FR02/16584 | 2002-12-23 | ||
| FR02/16588 | 2002-12-23 | ||
| FR02/16585 | 2002-12-23 | ||
| FR0216580A FR2849162A1 (en) | 2002-12-23 | 2002-12-23 | Oven for cooking food, has vane connected to rotation axis such that air coming from air inlet penetrates directly inside circular trajectory of vane before being expelled into rest of chamber space |
| FR02/16583 | 2002-12-23 | ||
| FR0216589A FR2849164B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR0216590A FR2849165B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR0216586A FR2849163B1 (en) | 2002-12-23 | 2002-12-23 | OVEN FOR COOKING FOOD |
| FR03/01295 | 2003-02-04 | ||
| FR0301295A FR2850532B1 (en) | 2003-02-04 | 2003-02-04 | OVEN FOR COOKING FOODS COMPRISING MEANS FOR SIGNALING THE END OF A HEATING PROCESS |
| FR0301437A FR2851117B1 (en) | 2003-02-06 | 2003-02-06 | OVEN FOR COOKING FOOD |
| FR03/01437 | 2003-02-06 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801071875A Division CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101371757A CN101371757A (en) | 2009-02-25 |
| CN101371757B true CN101371757B (en) | 2014-01-29 |
Family
ID=32406452
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100015346A Expired - Fee Related CN100522026C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CNB2003801071875A Expired - Fee Related CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN200810166104.4A Expired - Fee Related CN101371757B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN2007100015350A Expired - Fee Related CN101011220B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100015346A Expired - Fee Related CN100522026C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CNB2003801071875A Expired - Fee Related CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100015350A Expired - Fee Related CN101011220B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN100522026C (en) |
| FR (1) | FR2849162A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2390587B1 (en) * | 2010-05-27 | 2019-07-17 | BSH Hausgeräte GmbH | Cooking device with a steam generation function |
| EP2737254B1 (en) * | 2011-07-25 | 2020-01-15 | Convotherm-Elektrogeräte GmbH | Cooking device |
| JP2015516561A (en) * | 2012-03-28 | 2015-06-11 | ビーイー・エアロスペース・インコーポレーテッド | Vehicle oven with optimized water vapor injector |
| BR112015003934A2 (en) * | 2012-08-28 | 2018-05-22 | Eletrolux Home Products Corp N V | method of treatment of the dirty inner walls of an oven-and-oven cavity |
| AT513798B1 (en) * | 2013-01-07 | 2017-12-15 | Haas Food Equipment Gmbh | Apparatus and method for the metered, shaping output of mass bodies from pumpable masses |
| JP6082988B2 (en) * | 2013-03-14 | 2017-02-22 | パナソニックＩｐマネジメント株式会社 | Steam generator and heating cooker equipped with steam generator |
| US9423139B2 (en) * | 2013-04-01 | 2016-08-23 | Convotherm Elektrogeraete Gmbh | Condensation management system and method |
| MX2016013872A (en) | 2014-04-22 | 2017-02-02 | Illinois Tool Works | Oven with cleaning system and grease and water flow separation. |
| EP3134683B1 (en) | 2014-04-22 | 2019-01-09 | Illinois Tool Works Inc. | Oven with steam-water separation and method of using said oven |
| CN106455583B (en) | 2014-04-22 | 2019-03-29 | 伊利诺斯工具制品有限公司 | Oven with steam water-flow director |
| CN106108624A (en) * | 2016-08-23 | 2016-11-16 | 赵爱 | Novel scorch integrated box |
| WO2018045324A1 (en) * | 2016-09-02 | 2018-03-08 | Spectrum Brands, Inc. | Heat distribution member and vents for toaster oven |
| CN114165817A (en) * | 2017-03-10 | 2022-03-11 | 李明守 | Cooking method for non-stick pan and gas stove |
| CN110631061B (en) * | 2019-08-30 | 2021-01-01 | 广东美的厨房电器制造有限公司 | Combustion detection method and device and cooking equipment |
| CN111493686A (en) * | 2020-05-18 | 2020-08-07 | 闫培培 | Barbecue cup |
| CN111904293B (en) * | 2020-07-17 | 2022-04-01 | 广东美的白色家电技术创新中心有限公司 | Cooking device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619983A (en) * | 1995-05-05 | 1997-04-15 | Middleby Marshall, Inc. | Combination convection steamer oven |
| US5631033A (en) * | 1995-11-16 | 1997-05-20 | Kolvites; Albert | Method of cooking food with steam |
| CN2403337Y (en) * | 1999-12-09 | 2000-11-01 | 深圳市宝安区西乡镇臣田唐锋电器厂 | Multi-purpose electric oven |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395233A (en) * | 1981-06-22 | 1983-07-26 | G. S. Blodgett Co., Inc. | Dual flow heating apparatus |
| US4928663A (en) * | 1989-01-31 | 1990-05-29 | Bakers Pride Oven Co. | Enhanced air-flow convection oven |
| IT1234689B (en) * | 1989-03-21 | 1992-05-26 | Zanussi Grandi Impianti Spa | FORCED CONVECTION COOKING OVEN |
| FR2660418A1 (en) * | 1990-04-03 | 1991-10-04 | Bonnet Sa | Oven for cooking food products |
| CN2090669U (en) * | 1991-03-28 | 1991-12-18 | 常永跃 | Multifunctional oven |
| CA2088419A1 (en) * | 1992-02-10 | 1993-08-11 | Gajanan Madhav Prabhu | Gas fired convection oven |
| GB2286455B (en) * | 1994-02-10 | 1998-01-14 | Stoves Plc | Improvements in and relating to gaseous fuel burner assemblies and to appliances incorporating such burner assemblies |
| US5497760A (en) * | 1994-10-17 | 1996-03-12 | G. S. Blodgett Corporation | Convection oven with power induced back draft flow |
| FR2754334B1 (en) * | 1996-10-07 | 1998-12-18 | Bourgeois Prod Coop | STEAM OVEN AND FORCED CONVEXION |
| DE59701287D1 (en) * | 1997-12-23 | 2000-04-20 | Eloma Gmbh Groskuechentechnik | Method for dehumidifying a cooking space of a steam cooker and device therefor |
-
2002
- 2002-12-23 FR FR0216580A patent/FR2849162A1/en not_active Withdrawn
-
2003
- 2003-12-23 CN CNB2007100015346A patent/CN100522026C/en not_active Expired - Fee Related
- 2003-12-23 CN CNB2003801071875A patent/CN100392326C/en not_active Expired - Fee Related
- 2003-12-23 CN CN200810166104.4A patent/CN101371757B/en not_active Expired - Fee Related
- 2003-12-23 CN CN2007100015350A patent/CN101011220B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619983A (en) * | 1995-05-05 | 1997-04-15 | Middleby Marshall, Inc. | Combination convection steamer oven |
| US5631033A (en) * | 1995-11-16 | 1997-05-20 | Kolvites; Albert | Method of cooking food with steam |
| CN2403337Y (en) * | 1999-12-09 | 2000-11-01 | 深圳市宝安区西乡镇臣田唐锋电器厂 | Multi-purpose electric oven |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101011219A (en) | 2007-08-08 |
| FR2849162A1 (en) | 2004-06-25 |
| CN100522026C (en) | 2009-08-05 |
| CN101011220B (en) | 2010-12-29 |
| CN101011220A (en) | 2007-08-08 |
| CN100392326C (en) | 2008-06-04 |
| CN1729374A (en) | 2006-02-01 |
| CN101371757A (en) | 2009-02-25 |
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